Center on Budget and Policy Priorities  
   Liberal policy organization specializing in federal budget issues from a low-income perspective.
   http://www.cbpp.org/

Citizens for Tax Justice  
   Liberal public policy organization specializing in federal tax issues.
   http://www.ctj.org/

Taxpayers for Common Sense  
   Centrist organization that works to eliminate wasteful government spending.
   http://www.taxpayer.net/

National Priorities Project  
   Liberal public policy organization that specializes in reports on the state by state impact of federal budget decisions.
   http://www.natprior.org/

PollingReport.com: Budget Polls  
   Latest opinion surveys on budget-related issues.
   http://www.pollingreport.com/budget.htm

Cato Institute: Fiscal Policy Studies  
   Libertarian organization dedicated to reducing government spending and lowering taxes.
   http://www.cato.org/research/fiscal.html

Concord Coalition  
   Bipartisan advocacy organization that works for balanced federal budgets.
   http://www.concordcoalition.org/

National Taxpayers Union  
   A non-partisan, public interest advocacy organization dedicated to lower taxes, less wasteful spending, and the principles of rational and limited government.
   http://www.ntu.org/

Budget News  
   Full coverage of the latest federal budget news. Compiled by Yahoo.
   http://fullcoverage.yahoo.com/fc/US/U_S__Budget/

Taxpayers Against Fraud  
   Nonprofit public interest organization dedicated to combating fraud against the federal government through the use of the federal False Claims Act and the filing of whistleblower lawsuits.
   http://www.taf.org/

About.com: Federal Budget  
   Compilation of links related to the federal budget from About.com.
   http://usgovinfo.about.com/newsissues/usgovinfo/msubbudget.htm

Office of Management and Budget  
   White House office responsible for devising and submitting the president's annual budget proposal to Congress.
   http://www.whitehouse.gov/omb/

Budget Explorer  
   Explore the entire U.S. Federal Budget quickly and easily. Balance the budget to reduce the National Debt. Learn how your Federal taxes are spent.
   http://www.kowaldesign.com/budget/

Grandfather Government Growth Report by MWHodges  
   Graphs the massive growth of government -- four times faster than the total economy. Easy to follow, but extensive research and information.
   http://home.att.net/~mwhodges/piechart.htm

Invest in America Campaign  
   Coalition of pro-spending advocacy organizations and unions working for increased federal investment in education, the environment, and low-income programs.
   http://www.investinamerica.org/

Almanac of Policy Issues: Budgets and Taxes  
   Latest news, background information, and links on U.S. budgetary and appropriations issues.
   http://www.policyalmanac.org/economic/budget.shtml

Heritage Foundation: Budget  
   Articles, studies, and other conservative analysis of U.S. federal budget and tax policy.
   http://www.heritage.org/research/budget/index.cfm